Varimax Rotated Principal Component Analysis of Adaptability Traits in Haringhata Black Chickens Raised Under Intensive Management System

Saikhom, R.; Sahoo, A. K.; Taraphder, S.; Pan, S.; Sarkar, U.; Ghosh, P. R.; Bhattacharyya, D.; Baidya, S.

Authors

Saikhom, R. Department of Animal Genetics and Breeding, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Sahoo, A. K. Department of Animal Genetics and Breeding, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Taraphder, S. Department of Animal Genetics and Breeding, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Pan, S. Department of Livestock Production and Management, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Sarkar, U. Department of Animal Genetics and Breeding, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Ghosh, P. R. Department of Veterinary Physiology, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Bhattacharyya, D. Department of Livestock Products Technology, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA
Baidya, S. Department of Veterinary Parasitology, W.B.U.A.F.S., 37 K. B. Sarani, Kolkata- 700037, INDIA

Keywords:

Haringhata Black Chicken, Morphometric Traits, Principal Component Analysis

Abstract

Principal Component Analysis was carried out on Haringhata Black Chickens to identify the best component for explaining the variability of adaptability trait of birds at 18^th week of age. The descriptive statistics showed that the mean body measurements were 20.15±0.20 cm, 69.14±0.41 cm, 17.32±0.34 cm, 5.25±0.13 cm, 8.77±0.14 cm, 3.64±0.10 cm and 13.11±0.18 cm for wing length, wing span, tail length, central toe length, shank length, shank diameter and thigh length, respectively. Highly significant (P<0.01) positive correlations were recorded for all the morphometric traits studied. The highest correlation was obtained between wing length and thigh length (r = 0.85) while correlation between shank diameter and tail length (r = 0.29) was observed to be the lowest. Principal component analysis revealed that First Principal Component had highly correlated with thigh length (0.94), wing length (0.93), shank length (0.92), wing span (0.91) and shank diameter (0.84). This component explained maximum variability of about 76.02 % of the total variation in the original variables for adaptability and may be used as selection criteria for describing the adaptability of indigenous Haringhata Black chickens.